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Murrr4er [49]
3 years ago
11

PLEASE HELP ASAP 25 PTS

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
5 0

The horizontal line has equation y=3. The line is solid, and everything below it is shaded, which translates to the inequality y\le3. (so not B nor D)

The dashed line must have equation y=2x-1. Because it's dashed, the inequality is strict. Pick any point in the shaded region, (0, 0) for instance, and compare both sides of this equation. (0, 0) means both x=0 and y=0, so on the left side we have 0, and on the right we have -1. 0 > -1, so the inequality must be y>2x-1.

This means the answer is A.

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I need to solve for x. The interior angles are 30 and 4x+2. The exterior angle is 8+6x.
alexira [117]

Answer:

x + y + z = 180 (this is the first equation)

w + z = 180 (this is the second equation)

Now, rewrite the second equation as z = 180 - w and substitute that for z in the first equation:

x + y + (180 - w) = 180

x + y - w = 0

x + y = w

Step-by-step explanation:

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3 years ago
A.) f(x)=3x^2-18x+27.
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A)
Vertex:(3,0)
x-intercepts: (3,0) 
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B)
Vertex:(0,-9)
x-intercepts:none 
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micheal spent 18 at a local farmers . The apples he bought cost 2$ per pound, the peppers coat 3$ per pound. How many pounds of
algol13

Answer:

Step-by-step explanation:

3 pounds of apples and 4 pounds of peppers

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5 0
4 years ago
∠45° is complementary to which of the following angles?
mixas84 [53]

Answer:

45°

Step-by-step explanation:

<em>complem</em><em>entary</em><em> </em><em>angl</em><em>es</em><em> </em><em>add</em><em> </em><em>up</em><em> </em><em>to</em><em> </em><em>9</em><em>0</em><em>°</em><em> </em><em>so</em><em> </em><em>it's </em><em>9</em><em>0</em><em>-</em><em>4</em><em>5</em>

4 0
3 years ago
For fun question
iVinArrow [24]
We have an arithmetic progression:
an=number of item at row n

an=a₁+(n-1)d

d=common difference=an-a(n-1)=a₂-a₁=2-1=1
n=number of row

In this case:

an=1+(n-1)*1=n

The sum of an arithmetic serie is:
Sn=(a₁+an)n / 2

In this case:
a₁=1  (number of itms in the first row)
an=n  (we have to calculate this before)

Sn=(1+n)n /2=(n+n²)/2

Therefore:
f(n)=Sn=number of items when we have n number of rows

f(n)=(n+n²)/2

Answer: f(n)=(n+n²)/2

To chek:

f(1)=(1+1²)/2=1
f(2)=(2+2²)/2=6/2=3
f(3)=(3+3²)/2=(3+9)/2=12/2=6
....
5 0
3 years ago
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